Synthesis and Helicate Formation of a New Family of BINOL-Based Bis(bipyridine) Ligands
Synthesis and Helicate Formation of a New Family of BINOL-Based Bis(bipyridine) Ligands
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DOI：
10.1021/ja807780j
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发表时间：
2009-03-18
影响因子：
15
通讯作者：
Luetzen, Arne
中科院分区：
文献类型：
--
作者：
Bunzen, Jens;Bruhn, Torsten;Luetzen, Arne
合成了一类新的BINOL基双（联吡啶）配体1-3（BINOL = 2，2 '-二羟基-1，1'-联萘），它们是对映体纯的。然而，锌（II）离子与这些配体的配位并不导致特定金属超分子聚集体的选择性形成，发现1-3在与银（I）和铜（I）离子配位时经历高度非对映选择性自组装成D-2对称双核双链螺旋酸盐，并且在与铁（II）配位时经历高度非对映选择性自组装成D-3对称双核三链螺旋酸盐。如质谱法和NMR和CD光谱法结合量子化学计算所证明的。
A new family of BINOL-based bis(bipyridine) ligands 1-3 (BINOL = 2,2'-dihydroxy-1,1'-binaphthyl) was prepared in enantiomerically pure form. Whereas the coordination of zinc(II) ions to these ligands did not result in the selective formation of a specific metallosupramolecular aggregate, 1-3 were found to undergo highly diastereoselective self-assembly to D-2-symmetric dinuclear double-stranded helicates upon coordination to silver(I) and copper(I) ions and to D-3-symmetric dinuclear triple-stranded helicates upon coordination to iron(II) as demonstrated by mass spectrometry and by NMR and CD spectroscopy in combination with quantum chemical calculations.